Answer:
A. keeps you healthy
Explanation:
The immune system protects your body from outside "invaders," such as bacteria, viruses, fungi, and toxins.
The diffusion of chemicals and gases in and out of cells is an essential activity in human organs. Diffusion of oxygen and carbon dioxide gas occurs in the lungs. Diffusion of water, salts, and waste products occurs in the kidneys. Diffusion of calcium from food into cells occurs in the intestines.
What type of diffusion?
Is formed from heat and pressure
Isnt it going to government funds..?